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dialect/sql: allow adding check clauses in create table

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This commit is contained in:
Ariel Mashraki
2021-06-17 22:13:19 +03:00
committed by Ariel Mashraki
parent 754b56856a
commit b8f4614bfd
2 changed files with 23 additions and 10 deletions
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26
dialect/sql/builder.go
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@@ -107,14 +107,15 @@ func (c *ColumnBuilder) Query() (string, []interface{}) {
// TableBuilder is a query builder for `CREATE TABLE` statement.
type TableBuilder struct {
Builder
name string // table name.
exists bool // check existence.
charset string // table charset.
collation string // table collation.
options string // table options.
columns []Querier // table columns.
primary []string // primary key.
constraints []Querier // foreign keys and indices.
name string // table name.
exists bool // check existence.
charset string // table charset.
collation string // table collation.
options string // table options.
columns []Querier // table columns.
primary []string // primary key.
constraints []Querier // foreign keys and indices.
checks []func(*Builder) // check constraints.
}
// CreateTable returns a query builder for the `CREATE TABLE` statement.
@@ -177,6 +178,12 @@ func (t *TableBuilder) Constraints(fks ...*ForeignKeyBuilder) *TableBuilder {
return t
}
// Checks adds CHECK clauses to the CREATE TABLE statement.
func (t *TableBuilder) Checks(checks ...func(*Builder)) *TableBuilder {
t.checks = append(t.checks, checks...)
return t
}
// Charset appends the `CHARACTER SET` clause to the statement. MySQL only.
func (t *TableBuilder) Charset(s string) *TableBuilder {
t.charset = s
@@ -218,6 +225,9 @@ func (t *TableBuilder) Query() (string, []interface{}) {
if len(t.constraints) > 0 {
b.Comma().JoinComma(t.constraints...)
}
for _, check := range t.checks {
check(b.Comma())
}
})
if t.charset != "" {
t.WriteString(" CHARACTER SET " + t.charset)

7
dialect/sql/builder_test.go
View File

@@ -86,8 +86,11 @@ func TestBuilder(t *testing.T) {
).
PrimaryKey("id", "name").
ForeignKeys(ForeignKey().Columns("card_id").
Reference(Reference().Table("cards").Columns("id")).OnDelete("SET NULL")),
wantQuery: "CREATE TABLE IF NOT EXISTS `users`(`id` int auto_increment, `card_id` int, `doc` longtext CHECK (JSON_VALID(`doc`)), PRIMARY KEY(`id`, `name`), FOREIGN KEY(`card_id`) REFERENCES `cards`(`id`) ON DELETE SET NULL)",
Reference(Reference().Table("cards").Columns("id")).OnDelete("SET NULL")).
Checks(func(b *Builder) {
b.WriteString("CONSTRAINT ").Ident("valid_card").WriteString(" CHECK (").Ident("card_id").WriteString(" > 0)")
}),
wantQuery: "CREATE TABLE IF NOT EXISTS `users`(`id` int auto_increment, `card_id` int, `doc` longtext CHECK (JSON_VALID(`doc`)), PRIMARY KEY(`id`, `name`), FOREIGN KEY(`card_id`) REFERENCES `cards`(`id`) ON DELETE SET NULL, CONSTRAINT `valid_card` CHECK (`card_id` > 0))",
},
{
input: Dialect(dialect.Postgres).CreateTable("users").